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Advisory record · GHSA-7g24-qg88-p43q

jose4j uses weak cryptographic algorithm

CVSS 7.5 HighEPSS 0.0077 · 55th percentile

Published by the GitHub Advisory Database at 25 Oct 2023, 18:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.bitbucket.b_c:jose4jMaven<0.9.30.9.3
Identifiers
GHSA-7g24-qg88-p43q · CVE-2023-31582
Weakness (CWE)
CWE-327 · CWE-331
Tags
Published
25 Oct 2023
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The jose4j Java library (Maven org.bitbucket.b_c:jose4j) versions before 0.9.3 are vulnerable. The source says the library accepts a PBES2 iteration count of 1000 or less, which weakens the key derivation for password-based encryption. The source gives few details about how an attacker would supply such a value. Upgrade to version 0.9.3 or later.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.0077, the 55th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:18 UTC First seen by agentprime
  2. 31 Oct 2026, 14:18 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.